| abstract |
PROBLEM TO BE SOLVED: To form a fine zirconia hollow particle having a particle size of 20 μm or less, which has a strong bonding force between zirconia powders, can form a homogeneous and strong porous shell layer, is close to a true sphere, and is expected to increase particularly in the future. A manufacturing method suitable for the above is provided. In a method for producing zirconia hollow particles in which a zirconia powder is bonded to form a porous shell layer to form a hollow structure, a resin powder and a zirconia powder having a smaller diameter than the resin powder are mixed while being pressed. , Forming a precursor formed by coating the surface of the resin powder with the zirconia powder partially embedded, then firing the precursor to burn the resin powder and sintering the zirconia powder together A process for producing zirconia hollow particles characterized by the above. [Selection] Figure 1 |